python计算一元二次_python实现一元二次表达式求值
import mathimport cmathflag="yes"while True:flag= (input("是否计算新方程的根："))if (flag=="yes"):print('a*x*x+b*x+c=0')a= float (input('a='))b= float (input('b='))c= float (input('c='))p=b*b-4*a*cif p<0:pp=...
